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Myelofibrosis

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https://www.readbyqxmd.com/read/29056075/an-updated-review-of-the-jak1-2-inhibitor-ruxolitininb-in-the-philadelphia-negative-myeloproliferative-neoplasms
#1
Natalia Curto-Garcia, Claire N Harrison
Ruxolitinib (Rux), a JAK1/2 inhibitor, has been approved for patients with myelofibrosis and in polycythemia vera with inadequate response/intolerance to hydroxycarbamide. Studies have demonstrated that Rux improves disease-related symptoms and splenomegaly. A late emerging observation from two Phase III trials was that Rux was associated with survival advantage in comparison with placebo or other available therapies in myelofibrosis. Important data suggest that for polycythemia vera Rux improved control of blood counts...
October 23, 2017: Future Oncology
https://www.readbyqxmd.com/read/29047144/mecom-hbs1l-myb-thrb-rarb-jak2-and-tert-polymorphisms-defining-the-genetic-predisposition-to-myeloproliferative-neoplasms-a-study-on-939-patients
#2
Adrian P Trifa, Claudia Bănescu, Anca S Bojan, Cristian M Voina, Ștefana Popa, Simona Vișan, Alina D Ciubean, Florin Tripon, Delia Dima, Viola M Popov, Ștefan C Vesa, Mihaela Andreescu, Tünde Török-Vistai, Romeo G Mihăilă, Nicoleta Berbec, Ioan Macarie, Andrei Coliță, Maria Iordache, Alina C Cătană, Marius F Farcaș, Ciprian Tomuleasa, Kinga Vasile, Cristina Truică, Adriana Todincă, Lavinia Pop-Muntean, Raluca Manolache, Horia Bumbea, Ana-Maria Vlădăreanu, Mihaela Gaman, Cristina M Ciufu, Radu A Popp
Polycythemia vera (PV), essential thrombocythemia (ET) and primary myelofibrosis (PMF) are classical myeloproliferative neoplasms (MPN), characterized by specific somatic mutations in JAK2, CALR or MPL genes. JAK2 46/1 and TERT rs2736100 polymorphisms are known to significantly predispose to MPN. This study aimed to establish the additional contribution of the recently described MECOM rs2201862, HBS1L-MYB rs9376092 and THRB-RARB rs4858647 polymorphisms to the occurrence of MPN. These three polymorphisms, along with JAK2 46/1 and TERT rs2736100 were genotyped in 939 MPN patients (454 with ET, 337 with PV and 148 with PMF) and 483 controls...
October 19, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/29042367/safety-and-efficacy-of-long-term-treatment-of-chronic-persistent-itp-with-eltrombopag-final-results-of-the-extend-study
#3
Raymond S M Wong, Mansoor N Saleh, Abderrahim Khelif, Abdulgabar Salama, Maria Socorro O Portella, Paul Burgess, James B Bussel
In phase 2/3 trials, eltrombopag treatment for ≤6 months in patients with chronic/persistent immune thrombocytopenia (ITP) increased platelet counts and reduced bleeding. The open-label EXTEND study evaluated long-term safety and efficacy of eltrombopag in adults with ITP who had completed a previous eltrombopag study. For the 302 patients enrolled, median duration of eltrombopag treatment was 2.37 years (2 days to 8.76 years). Median platelet counts increased to ≥50×10(9)/L by week 2 and were sustained throughout the treatment period...
October 17, 2017: Blood
https://www.readbyqxmd.com/read/29040257/current-challenges-in-the-management-of-essential-thrombocythemia
#4
Ariel Kleman, Arun K Singavi, Laura C Michaelis
Essential thrombocythemia (ET), an uncommon blood cancer, is one of the classic myeloproliferative neoplasms, a category that also includes polycythemia vera and primary myelofibrosis. All 3 diseases are clonal hematopoietic stem cell disorders. Since 2005, when scientists discovered a molecular aberration driving clonal hematopoiesis in polycythemia vera, our understanding of the genomic underpinnings of these conditions has increased rapidly. Over the last decades, primary prevention of thrombotic and hemorrhagic complications has improved the lives of patients with ET, and the ability to characterize the disease by the presence or absence of molecular mutations has lent precision to our prognostic models...
October 2017: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/29037318/coexistence-of-hypertrophic-osteoarthropathy-and-myelofibrosis
#5
Bayram Kelle, Fatih Yıldız, Semra Paydas, Emine Kılıc Bagır, Melek Ergin, Erkan Kozanoglu
No abstract text is available yet for this article.
September 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/29034885/generation-and-characterization-of-a-human-induced-pluripotent-stem-ips-cell-line-derived-from-an-acute-myeloid-leukemia-patient-evolving-from-primary-myelofibrosis-carrying-the-calr-52bp-deletion-and-the-asxl1-p-r693x-mutation
#6
Cintia E Gomez Limia, Sylvie Devalle, Marcelo Reis, Jaroslaw Sochacki, Mayra Carneiro, Rodrigo Madeiro da Costa, Mariana D'Andrea, Telma Padilha, Ilana R Zalcberg, Cristiana Solza, Adelmo Daumas, Stevens Rehen, Bárbara Monte-Mór, Martín H Bonamino
Peripheral blood sample was donated by a 61years old female patient diagnosed with acute myeloid leukemia secondary to a primary myelofibrosis harboring the 52-bp deletion in the CALR gene (c.1092_1143del, p.L367fs*46) and the R693X mutation in the ASXL1 gene (c.2077C>T, p.R693X). CD34+ cells were isolated from the sample and subjected to the reprogramming procedure by using the Sendai virus carrying the reprogramming factors Oct3/4, Sox2, Klf4 and c-Myc. iPS colonies generated retained the original mutations and displayed all the features of bona fide iPS cells...
October 2017: Stem Cell Research
https://www.readbyqxmd.com/read/29025719/aml-with-myelodysplasia-related-changes-masquerades-as-acute-panmyelosis-with-myelofibrosis
#7
Zhaodong Xu
No abstract text is available yet for this article.
October 12, 2017: Blood
https://www.readbyqxmd.com/read/29024842/peritoneal-carcinomatosis-like-implants-of-extramedullary-hematopoiesis-an-insolite-occurrence-during-splenectomy-for-myelofibrosis
#8
Marco Casaccia, Rosario Fornaro, Marco Frascio, Denise Palombo, Cesare Stabilini, Emma Firpo, Ezio Gianetta
INTRODUCTION: Primary myelofibrosis (MF) is a myeloproliferative neoplasm that results in debilitating constitutional symptoms, splenomegaly, and cytopenias. In patients with symptomatic splenomegaly, splenectomy remains a viable treatment option for MF patients with medically refractory symptomatic splenomegaly that precludes the use of ruxolitinib. CASE PRESENTATION: We present the clinical case of a patient who was admitted to our Department to perform a splenectomy in MF as a therapeutic step prior to an allogeneic stem cell transplantation (ASCT)...
October 5, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29024542/the-relative-bioavailability-food-effect-and-drug-interaction-with-omeprazole-of-momelotinib-tablet-formulation-in-healthy-subjects
#9
Yan Xin, Lixin Shao, Julie Maltzman, Dimitrios Stefanidis, Jeffrey Hemenway, Thomas Tarnowski, Wei Deng, Jeffrey A Silverman
Momelotinib is a potent and selective small-molecule inhibitor of JAK1/2 that is under investigation for the treatment of myeloproliferative neoplasms. In a phase 1/2 study in myelofibrosis patients, once-daily dosing of a 300-mg momelotinib capsule was selected for further development based on a favorable benefit:risk profile. A tablet formulation was recently developed for further clinical evaluation. In this study, the relative bioavailability of the tablet formulation versus the initial capsule formulation and the effect of food and omeprazole on the pharmacokinetics of a single-dose momelotinib tablet were evaluated in healthy subjects...
October 11, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/29022420/recommendations-on-the-use-of-ruxolitinib-for-the-treatment-of-myelofibrosis
#10
Timothy Devos, Dominik Selleslag, Pierre Zachée, Fleur Samantha Benghiat
OBJECTIVES: Myelofibrosis (MF) is a severe disease, with decreased life expectancy and heavy symptom burden. Ruxolitinib is the only approved pharmacotherapy for the treatment of MF patients. In Belgium, ruxolitinib is only reimbursed for MF patients with splenomegaly for whom the disease is categorized as intermediate-2 or high risk. The improvement of symptoms without spleen volume reduction is not considered sufficient to continue treatment. The aim of this manuscript is to provide guidance for the safe and effective administration of ruxolitinib, considering the particularities of the Belgian reimbursement criteria...
October 12, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/29022201/increased-mean-platelet-volume-mpv-is-an-independent-predictor-of-inferior-survival-in-patients-with-primary-and-secondary-myelofibrosis
#11
Marko Lucijanic, Zdravko Mitrovic, David Cicic, Zeljko Prka, Vlatko Pejsa, Ana Livun, Tajana Stoos-Veic, Zeljko Romic, Marcela Zivkovic, Iva Lucijanic, Zrinka Fabris, Rajko Kusec
Neoplastic megakaryopoiesis is a dominant feature of Philadelphia-chromosome-negative myeloproliferative neoplasms (Ph- MPNs), and elevated mean-platelet-volume (MPV) is a common finding in these diseases. The clinical and prognostic significances of MPV in patients with primary (PMF) and secondary myelofibrosis (SMF) have not been reported. We retrospectively analyzed 87 patients with myelofibrosis (66 with PMF, 21 with SMF) treated at our institution. MPV was recorded in addition to other hematological and clinical parameters...
October 11, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/29020927/dilemmas-in-a-pregnant-woman-with-myelofibrosis-secondary-to-signet-ring-adenocarcinoma-a-case-report
#12
Pujun Guan, Zihang Chen, Li Zhang, Ling Pan
BACKGROUND: We describe the first reported case of myelofibrosis as an extremely rare complication of gastric cancer during pregnancy; the clinical diagnosis and treatment of which is highly challenging due to nonspecific symptoms coupled with the conflicting needs of immediate disease control and continuation of pregnancy. CASE PRESENTATION: We report a 36-year-old pregnant woman who presented with cytopenia, fatigue, vomiting, and diarrhea for 20 days on the background of newly diagnosed myelofibrosis secondary to gastric signet ring adenocarcinoma...
October 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29018798/tafro-syndrome-in-caucasians-a-case-report-and-review-of-the-literature
#13
Céline Louis, Sandrine Vijgen, Kaveh Samii, Yves Chalandon, Louis Terriou, David Launay, David C Fajgenbaum, Jörg D Seebach, Yannick D Muller
BACKGROUND: TAFRO syndrome has been reported in Japan among human herpesvirus 8 (HHV-8)-negative/idiopathic multicentric Castleman's disease (iMCD) patients. To date, the majority of iMCD patients with TAFRO syndrome originate from Japan. CASE PRESENTATION: Herein, we report a 67-year-old HIV/HHV-8-negative Caucasian iMCD patient diagnosed with TAFRO. He presented with marked systemic inflammation, bicytopenia, terminal renal insufficiency, diffuse lymphadenopathies, and anasarca...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28991281/trombosis-venosa-espl%C3%A3-cnica-como-manifestaci%C3%A3-n-inicial-de-mielofibrosis-primaria
#14
Gregorio Campos-Cabrera, Virginia Campos-Cabrera, Salvador Campos-Cabrera, José-Luis Campos-Villagómez, Alejandra Romero-González
other: Las neoplasias mieloproliferativas (NMP) son alteraciones crónicas de las células madre hematopoyéticas clonales caracterizadas por una mayor producción de granulocitos, glóbulos rojos o plaquetas. Una de las principales complicaciones de las NMP es la aparición de problemas trombóticos venosos y arteriales causados por un aumento en la agregación plaquetaria y la generación de trombina. Se evaluaron 11 casos de mielofibrosis primaria (MP), de los cuales dos debutaron con trombosis venosa esplácnica (TVE)...
2017: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
https://www.readbyqxmd.com/read/28990497/calr-jak2-and-mpl-mutation-status-in-argentinean-patients-with-bcr-abl1-negative-myeloproliferative-neoplasms
#15
Mara Jorgelina Ojeda, Irma Margarita Bragós, Karina Lucrecia Calvo, Gladis Marcela Williams, María Magdalena Carbonell, Arianna Flavia Pratti
OBJECTIVES: To establish the frequency of JAK2, MPL and CALR mutations in Argentinean patients with BCR-ABL1-negative  myeloproliferative neoplasms (MPN) and to compare their clinical and haematological features. METHODS: Mutations of JAK2V617F, JAK2 exon 12, MPL W515L/K and CALR were analysed in 439 Argentinean patients with BCR-ABL1-negative MPN, including 176 polycythemia vera (PV), 214 essential thrombocythemia (ET) and 49 primary myelofibrosis (PMF). RESULTS: In 94...
October 9, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28986762/evaluation-of-the-dose-and-efficacy-of-ruxolitinib-in-japanese-patients-with-myelofibrosis
#16
Keita Kirito, Shinichiro Okamoto, Kohshi Ohishi, Tetsuzo Tauchi, Hiroshi Handa, Shigeki Saito, Katsuto Takenaka, Kazuya Shimoda, Kenji Oritani, Koichi Akashi, Hikaru Okada, Taro Amagasaki, Kazuyuki Suzuki, Toshio Yonezu, Norio Komatsu
Ruxolitinib, a potent JAK1/JAK2 inhibitor, improved splenomegaly and myelofibrosis-associated symptoms and prolonged survival compared with placebo and best available therapy in the phase 3 COMFORT studies. Although cytopenias were the most common adverse events associated with ruxolitinib treatment, a COMFORT-I analysis showed that they were managed effectively with dose modifications, without a negative impact on the efficacy of ruxolitinib. Subsequently, studies A2202 and AJP01 showed that ruxolitinib is an effective treatment for Japanese patients with myelofibrosis...
October 6, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28984775/clinicopathological-features-of-progressive-renal-involvement-in-tafro-syndrome-a-case-report-and-literature-review
#17
REVIEW
Mari Tanaka, Hiraku Tsujimoto, Kojiro Yamamoto, Saeko Shimoda, Kazumasa Oka, Hiroya Takeoka
RATIONALE: TAFRO syndrome is a systemic inflammatory disease characterized by a constellation of symptoms: Thrombocytopenia, Anasarca, MyeloFibrosis, Renal dysfunction, and Organomegaly. Progressive renal insufficiency is a predominant symptom; however, the mechanism of acute kidney injury (AKI) remains unclear, probably because severe thrombocytopenia prevents kidney biopsy. We report a rare case of TAFRO syndrome with histologically confirmed renal involvement. PATIENTS CONCERNS: A 70-year-old man developed fever, anasarca, AKI, thrombocytopenia, and hepatosplenomegaly...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28982745/nccn-guidelines-insights-myeloproliferative-neoplasms-version-2-2018
#18
Ruben A Mesa, Catriona Jamieson, Ravi Bhatia, Michael W Deininger, Christopher D Fletcher, Aaron T Gerds, Ivana Gojo, Jason Gotlib, Krishna Gundabolu, Gabriela Hobbs, Brandon McMahon, Sanjay R Mohan, Stephen Oh, Eric Padron, Nikolaos Papadantonakis, Philip Pancari, Nikolai Podoltsev, Raajit Rampal, Erik Ranheim, Vishnu Reddy, Lindsay A M Rein, Bart Scott, David S Snyder, Brady L Stein, Moshe Talpaz, Srdan Verstovsek, Martha Wadleigh, Eunice S Wang, Mary Anne Bergman, Kristina M Gregory, Hema Sundar
Myeloproliferative neoplasms (MPNs) are a group of heterogeneous disorders of the hematopoietic system that include myelofibrosis (MF), polycythemia vera (PV), and essential thrombocythemia (ET). PV and ET are characterized by significant thrombohemorrhagic complications and a high risk of transformation to MF and acute myeloid leukemia. The diagnosis and management of PV and ET has evolved since the identification of mutations implicated in their pathogenesis. These NCCN Guideline Insights discuss the recommendations outlined in the NCCN Guidelines for the risk stratification, treatment, and special considerations for the management of PV and ET...
October 2017: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/28976809/lepr-cells-dispute-hegemony-with-gli1-cells-in-bone-marrow-fibrosis
#19
Isadora F G Sena, Isabella T Borges, Luiza Lousado, Patrick O Azevedo, Julia P Andreotti, Viviani M Almeida, Ana E Paiva, Gabryella S P Santos, Daniel A P Guerra, Pedro H D M Prazeres, Luanny Souto, Akiva Mintz, Alexander Birbrair
Bone marrow fibrosis is a reactive process, and a central pathological feature of primary myelofibrosis. Revealing the origin of fibroblastic cells in the bone marrow is crucial, as these cells are considered an ideal, and essential target for anti-fibrotic therapy. In 2 recent studies, Decker et al. (2017) and Schneider et al. (2017), by using state-of-the-art techniques including in vivo lineage-tracing, provide evidence that leptin receptor (LepR)-expressing and Gli1-expressing cells are responsible for fibrotic tissue deposition in the bone marrow...
October 4, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28970999/acute-respiratory-distress-syndrome-a-rare-complication-caused-by-usage-of-ruxolitinib
#20
Bugra Kerget, Omer Araz, Elif Yilmazel Ucar, Metin Akgun, Leyla Sağlam
Ruxolitinib-associated acute respiratory distress has rarely been reported, mostly due to discontinuation of treatment. Herein we report a 58-year-old male patient with primary myelofibrosis who presented with malaise and dyspnea 15 days after initiation of the treatment. The patient was diagnosed as mild acute respiratory distress syndrome (ARDS). After excluding other potential causes such as infection and cardiac pathologies, it was considered secondary to ruxolitinib use. The medication was discontinued and 1 mg/kg methylprednisolone was given to prevent cytokine rebound syndrome and continuous positive airway pressure therapy was prescribed for ARDS...
2017: Respiratory Medicine Case Reports
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